 |
| 证明文件: 42 phrases in 18 subjects |
| Agriculture | 1 |
| Architecture | 1 |
| Automobiles | 1 |
| Business | 2 |
| China | 4 |
| Commerce | 4 |
| Economy | 7 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Finances | 1 |
| General | 3 |
| International trade | 3 |
| Nautical | 2 |
| Project management | 1 |
| Rail transport | 1 |
| Securities | 2 |
| Shipbuilding | 1 |
| Space | 2 |
| Technology | 5 |